题目内容
12．I don't know if she _______ next month．If she _______，let me know．（ ）| A． | comes； comes | B． | will come； comes | ||
| C． | comes； will come | D． | will come； will come |
分析 我不知道她下个月是否来，如果她来了，请让我知道．
解答 答案：B
第一空 if是"是否"的意思，I don't know if 后跟的是宾语从句，next month是表示将来的时间，应该用一般将来时，will come；第二空 if引导条件状语从句，主句是一般将来时，从句用一般现在时，此处主语是she，故comes．故选B．
点评 本题考查的是宾语从句和条件状语从句，理解句意并掌握两种从句的用法是解答本题的关键．
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